If you could make an object spin at the speed of light on earth, what would be the outcome regarding time flow inside that object and those around it?
“spin” is angular velocity - the speed of light is “linear” velocity.It’s meaningless to talk about something “spinning at the speed of light”.You could “spin at 1000 rotations per minute”.If you’re thinking of an object that’s spinning - the center of the object is stationary - and the outer edge has an instantaneous speed (which could be compared to the speed of light).Since nothing with mass can move at the speed of light - you couldn’t have (for example) a wheel who’s outer rim was moving at lightspeed - it would have to be a little slower.Such a thing would be weird because the rate of flow of time, the length of the rim itself would be distorted by relativity…but in reality, the strength of the bonds between atoms would not allow this to happen. It’s tempting to ask “Well what would happen if the material was infinitely rigid and infinitely strong” - but things like that can’t exist because of relativity - and if you insist on them, then the rules of physics can’t give you a valid answer.As for the flow of time inside and around it - it would depend dramatically upon where on the disk you were.Honestly - this isn’t a very meaningful question.
If something accelerates to the speed of light does time for the object stop passing and movement cease to occur? Or does time dilate infinitely causing an infinite gap between one moment and the next giving the perception of distance becoming nil?
This thought pattern is a misconception about time dilation and length contraction. I'll try and clarify it for you.Time dilation and length contraction are an observer's observation only of an object moving relative to them. They have no physical or other effects on the object being observed or the observer conducting the observations.It is not a real phenomenon, it is only a visual phenomenon related to speed, and as speed is only a relative concept, speed alone does not have any capabilities as it is only an expression.
If time stops when we reach the speed of light, then how does a photon move?
The theory of special relativity explains how space and time are linked for objects that are moving. The main aspect concerns objects moving at the speed of light.True, when something travels at the speed of light it really doesn’t experience any 'time'. But don't forget, it does not experience any 'distance' either. We know that a photon cannot have a perspective, but if it had, the starting point and time of a photon would the same as the destination point and time. May Sound weird - but do try to grasp it.You see, time and distance between two objects is different for observers that are moving at different speeds. This means, motion does not depend upon the time experienced by the object in motion; it depends only on the observer's time.You must have travelled in a train sometime; when you are looking out the window, you actually see the ground, the nearby trees, the telegraph poles, etc moving fast across your vision. Its like you are rest, sitting in the train and all the stuff outside as speeding away from you. You'd have even heard the statement "Ah! my station has arrived". But to a person standing outside, 'at rest' - it is the train that is moving. On the same lines, every object is stationary or 'at rest' - therefore, motion depends on each other's reference frame. Light does not experience either TIME or DISTANCE, it only moves from one point in spacetime to another point - in your reference frame.I hope it is clear..
Imagine a universe where all objects are moving at the speed of light with slight differences, will time act normal from their frame again as if there was no dilation?
If special relativity works in that universe as it does in this one, and everything is moving at the speed of light, then everything is massless and cannot have experieces.The concept of an observer (something that can experience stuff like time and space) who travels at lightspeed is a contradiction in terms within special relativity.Which gives us the problem of what or who the observer is in the question, who sees all these speeds: has to be somethng with mass. The question should be that evertything other than this one observer is moving at the speed of light … then we have an observer in a universe of light (and gravtons, if quantum gravity is right).Time is, thus, experienced normally by that one observer, and nothing else can experience time at all.You can ask about relaive velocities all very close to the speed of light, within special relativity, and ask about each experience of time. The answer is that all observers have the same experience of time as each other.Time always passes at the rate of one second every secnd for everyone.
If time stops down near the speed of light, why does a photon have a spin of 1?
I’m guessing it’s because time is relative.
What would happen if the world stopped spinning?
If the world were to suddenly stop spinning, then everything on the planet would continue to move at the same speed under it's own inertia, until slowed down by friction. So, with the Earth being approximately 24,000 miles in circumference, and the Earth conveniently taking approximately 24 hours to complete one rotation, it's simple to work out that anything on the equator is currently moving at 1000 mph (even as you sit at your computer desk reading this, that is the speed at which you are currently travelling). We aren't aware of this movement of course because gravity holds us down in place and everything else moves at the same speed in relation. Put a sudden stop to that rotation however, and the effect is the same as being in a car travel ling at 1000 mph suddenly coming to a halt. You continue at the same speed, along with everything else in the car. In short, complete and utter devastation of everything on the planet, (though perhaps less noticeable at the poles). Cities, buildings, trees, oceans, would quite literally be wiped across the face of the Earth and the debris strewn around for hundreds if not thousands of miles, along with us. As for gravity, not entirely sure what would happen to that but I expect it would weaken considerably, if not disappear altogether. Our atmosphere would quickly dissipate into space along with the debris, and us. Not a nice prospect, but unlikely to ever happen, unless we get hit by a very large rogue planet or something, which isn't quite on the cards just yet.
Speed of light-time stands still, what do you think?
This is correct, but only from the point of view of the light wave itself. An outside observer sees a light wave travel at 'c', but we seldom consider how things would appear from the point of view of the light wave or a photon. We already know that within the frame of reference of a high velocity object, time will slow. As we get closer to 'c', time will slow noticeably. And upon reaching 'c' (possible only for massless particles such as the photon) time becomes reduced precisely to zero. That is, the light wave arrives at its destination in exactly zero time, which is equivalent to saying that all distances are reduced to zero for the photon. It experiences all of its world lines simultaneously, which is the definition of time standing still. Awesome to think about, isn't it?
If our galaxy or Earth stopped moving would time speed up?
Well you know, time is about perception and the referencial you are using, the time doesn't really exist on it's own, it's not something physical it's just our way to compare the movement of two things. Time is a comparison of movement from a referencial to another. So the thing is, there are as many times as there are as many referencial, so for someone who is placed in the same system, where everything is stopped, the time don't pass, but for someone who's outside that system and look at that frozen system, the time will still flow, merely because he is in a bigger system that is still moving, the frozen system still ages for the person outside, but for the person inside the frozen system, when it will move again, the age will remain the same as when it started to stop :) . So as you can see, the age depends of the referencial you are using.There is time when there is movement, without movement you can't perceive the time, and when I say no movement, I say no entropy, no light, nothing moving even your own synapses that doesn't interact, the fact that we think the time is something irreversible, is because we don't have all the information of how the entropy evolved in a system, let me explain.Imagine a system that you created, let's call it "System A", in this System A you have two balls, nothing else. Then produce a force on a ball to make it enter in collision with the other, and during this moment record everything that is going on, then reverse everything, by adding the same amount of energy to the other ball, you reversed the time in the System A, but in your own bigger system, the "System B", you know that the System A has still the same age, you created more entropy in your system B to recreate the initial condition of the System A.So what does it means ? It means that when you ask something about the time, you have to say about what you are comparing it. To answer your question, if everything in earth stopped, and there's someone outside the earth that is looking at it, the time will remain the same for the guy outside, but for those who are on earth, the time will stop. The time is only an human perception and a simplification of what we call the entropy.